Add glGetActiveUniformBlockiv to GPU command buffer.

gpu/command_buffer/service/gles2_cmd_validation_autogen.h

Index: gpu/command_buffer/service/gles2_cmd_validation_autogen.h
diff --git a/gpu/command_buffer/service/gles2_cmd_validation_autogen.h b/gpu/command_buffer/service/gles2_cmd_validation_autogen.h
index 6c9d37762e78b7f4ff8117dc237b46b2be49ebc9..c173a0205fea1fc69c54b85e0ad0588e0c6114e1 100644
--- a/gpu/command_buffer/service/gles2_cmd_validation_autogen.h
+++ b/gpu/command_buffer/service/gles2_cmd_validation_autogen.h
@@ -78,6 +78,7 @@ ValueValidator<GLenum> texture_usage;
 ValueValidator<GLenum> texture_wrap_mode;
 ValueValidator<GLenum> transform_feedback_bind_target;
 ValueValidator<GLenum> transform_feedback_primitive_mode;
+ValueValidator<GLenum> uniform_block_parameter;
 ValueValidator<GLenum> value_buffer_target;
 ValueValidator<GLint> vertex_attrib_size;
 ValueValidator<GLenum> vertex_attrib_type;